Retro tire sizes?

[oneblueyedog]

My dad gave me an old 911SC brochure. In it were tire sizes that essentially were taller in the front than in the rear. I checked in my Technical Spec book and found the same thing. I don't have it at the office but I think it was 65 series for the front and 60 series for the rear.

Does anyone run their cars this way? I kind of like the way it fills up the wheel wells, even though I run 50 series tires.

205 50 16 front and 225 50 16 rear.

Show me Pics if you got em. Thanks.

[IROC]

The tires weren't technically taller, they just had different aspect ratios.

IMHO, "filling up the wheel wells" is a neat thing whether you take your stock wheels and space them out or go hog wild and run something like 245s/275s... :>)

Mike

[stlrj]

I'm running 215 60 16's on 6" Design 90 (964)wheels on all four corners and they look just fine the way they fill the fender wells.

Joe
74 w/86 3.2

[oneblueyedog]

Yep the book says for my 15 inch cookie cutters 185/70 VR15 front and 215/60VR15 and for my Fuchs 205/55VR16 F ans 225/50VR16.

I'm going to have to study this aspect ratio thing.

[david c.]

Aspect ratio is simply a way of expressing the tire's sidewall height as a function of its width. So, a 205/50/15 is 205mm wide and its height is 50% of its width, or 102.5mm "tall". 15 is, of course, the wheel diameter.

[IROC]

...and to expand on what Dave said, a 185/70-15 is about 25.19" in diameter and a 215/60-15 is about 25.16" in diameter, so neither is really taller than the other - they just have different widths and sidewall heights.

Having said that, there's no reason to maintain the same diameter front and rear unless you have all-wheel drive.

Mike